23929131 has 16 divisors (see below), whose sum is σ = 33454080. Its totient is φ = 15185280.

The previous prime is 23929109. The next prime is 23929133. The reversal of 23929131 is 13192932.

It is a happy number.

It is not a de Polignac number, because 23929131 - 2⁵ = 23929099 is a prime.

It is a super-2 number, since 2×23929131² = 1145206620830322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23929133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15910 + ... + 17348.

It is an arithmetic number, because the mean of its divisors is an integer number (2090880).

Almost surely, 2^23929131 is an apocalyptic number.

23929131 is a deficient number, since it is larger than the sum of its proper divisors (9524949).

23929131 is a wasteful number, since it uses less digits than its factorization.

23929131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706.

The product of its digits is 2916, while the sum is 30.

The square root of 23929131 is about 4891.7411010805. The cubic root of 23929131 is about 288.1657152965.

The spelling of 23929131 in words is "twenty-three million, nine hundred twenty-nine thousand, one hundred thirty-one".